Shared memory coupling of network infrastructure devices

• US 6,999,998 B2
• Filed: 10/04/2001
• Issued: 02/14/2006
• Est. Priority Date: 10/04/2001
• Status: Expired due to Term

• Current Assignee: Valtrus Innovations Limited (f/k/a Dolya Holdco 9 Limited) (Key Patent Innovations Limited)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Russell, Lance W.
• Primary Examiner(s): LANE, JOHN A
• Application Number:
  US09/971,135
• Publication Number:
  US 20030069938A1
• Time in Patent Office: 1,594 Days
• Field of Search: 711/213, 711/147, 709/213, 709/214, 709/217, 709/238, 709/242
• US Class Current: 709/213
• CPC Class Codes: G06F 15/167 using a common memory, e.g. mailbox

Abstract

Described herein are systems and methods of coupling network infrastructure devices through a shared memory facility, rather than through conventional network I/O (input/output) adapters. All communications through the resulting network infrastructure service system are conducted using shared memory as the physical transport medium. In this way, the congestion and processing overhead caused by the duplication and storage of multiple copies of data packets to be transferred between network infrastructure devices may be avoided. This feature of the invention significantly increases the speed at which packets may be transmitted between network infrastructure devices.

Claims

1. A system providing network infrastructure services, comprising a shared memory facility interconnecting a plurality of network devices each configured to perform a dedicated network infrastructure function,

wherein each network device is configurable and comprises:

a local processor;

a local memory;

a local communications protocol stack; and

a shared memory interface system operable to provide a local shared memory network between the network devices, and a global shared memory network between the network devices and one or more remote nodes by capturing packets from the local communications protocol stacks and routing the captured packets over the shared memory facility,

wherein the shared memory interface system on each local node comprises a local shared memory virtual adapter and a global shared memory virtual adapter;

the local shared memory virtual adapters being operable to capture locally addressed packets from the local communications protocol stacks and to route the captured packets for physical transport over the shared memory facility; and

the global shared memory virtual adapters being operable to capture globally addressed packets from the local communications protocol stacks and to route the captured packets for physical transport over the shared memory facility.

2. The system of claim 1, wherein the local shared memory virtual adapters appear to the local communications protocol stacks as device drivers for physical network adapters connected to the local shared memory network, and the global shared memory virtual adapters appear to the local communications protocol stacks as device drivers for physical network adapters connected to the global shared memory network.

3. The system of claim 1, wherein the local shared memory network and the global shared memory network provided by the shared memory interface system are each characterized by a respective configurable maximum transfer unit (MTU).